Who knew software tweaking could have such a huge effect on battery life? Microsoft has just shown it's possible with an update for Windows 8.1 on the Surface Pro 2 which extends battery life by a huge 25 per cent.

Battery tests by Anandtech show the tablet can now last more than 8 hours while browsing the web over Wi-Fi. That's a jump up from 6.6 hours before the latest software update was released. It's also a 16 per cent video over Wi-Fi playback boost up to 7.75 hours from 6.65.

READ: Microsoft Surface Pro 2 review

Compared to the competition the Surface Pro 2 is still a bit behind, with it scoring 8.330 and the iPad Air scoring 9.480 and the Google Nexus 7 (2013) hitting 12.230. Microsoft told Anandtech that the tablet's various sensors, its higher resolution display, its active digitiser, and its capacitive touch screen all increase the amount of battery power required. 

Sections Microsoft Tablets